Hauv peb lub neej, CPE thiab PVC siv ntau dua thiab ntau dua. Chlorinated polyethylene yog cov khoom siv polymer uas muaj cov hmoov dawb zoo li, tsis muaj tshuaj lom thiab tsis qab, thiab muaj kev tiv thaiv huab cua zoo heev, tiv thaiv ozone, tiv thaiv tshuaj lom neeg thiab tiv thaiv kev laus. Kev ua tau zoo, nrog kev tiv thaiv roj zoo, nplaim taws rov qab thiab xim zoo. Kev tawv zoo (tseem yoog tau ntawm -30 ° C), sib xws zoo nrog lwm cov ntaub ntawv polymer, thiab qhov kub siab decomposition. Chlorinated polyethylene yog cov khoom siv polymer ua los ntawm high-density polyethylene (HDPE) los ntawm kev hloov pauv chlorination. Raws li cov qauv sib txawv thiab kev siv, chlorinated polyethylene tuaj yeem faib ua ob pawg: resin-type chlorinated polyethylene (CPE) thiab elastomer-type chlorinated polyethylene (CM). Ntxiv nrog rau kev siv ib leeg, thermoplastic resins kuj tuaj yeem sib xyaw nrog polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS thiab txawm tias polyurethane (PU). Hauv kev lag luam roj hmab, CPE siv tau ua cov roj hmab tshwj xeeb zoo, thiab kuj siv tau nrog roj hmab ethylene-propylene (EPR), roj hmab butyl (IIR), roj hmab nitrile (NBR), chlorosulfonated polyethylene (CSM), thiab lwm yam. Lwm cov roj hmab sib xyaw siv.
Xyoo 1960, lub tuam txhab German Hoechst tau tsim thiab ua tiav kev tsim khoom lag luam. kuv lub teb chaws tau pib tsim cov tshuaj polyethylene chlorinated thaum xyoo 1970. Lub "Aqueous Phase Suspension Synthesis of CPE Technology" tau tsim thawj zaug los ntawm Anhui Chemical Industry Research Institute, thiab cov khoom siv tsim khoom ntawm 500-1000t / a nrog ntau qhov ntsuas tau tsim hauv Wuhu, Anhui, Taicang, Jiangsu, thiab Weifang, Shandong.
Qhov kev tiv thaiv roj ntawm CPE yog qhov nruab nrab, ntawm cov uas qhov kev tiv thaiv rau ASTM No. 1 roj thiab ASTM No. 2 roj zoo heev, uas yog sib npaug rau NBR; qhov kev tiv thaiv rau ASTM No. 3 roj zoo heev, zoo dua CR, uas yog sib npaug rau CSM.
CPE muaj chlorine, uas muaj cov khoom zoo heev rau kev nplaim taws thiab muaj cov yam ntxwv ntawm kev hlawv thiab tiv thaiv dej ntws. Nws tuaj yeem ua ke nrog antimony-based flame retardant, chlorinated paraffin, thiab Al (OH) 3 hauv qhov sib piv kom tau txais cov khoom siv nplaim taws nrog kev ua tau zoo heev thiab tus nqi qis.
CPE tsis muaj tshuaj lom, tsis muaj cov hlau hnyav thiab PAHS, thiab ua tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv ib puag ncig.
CPE muaj kev ua haujlwm siab thiab tuaj yeem ua rau cov khoom ua tau raws li ntau yam kev ua tau zoo. CPE muaj kev ua haujlwm zoo, Mooney viscosity (ML121 1 + 4) yog nruab nrab ntawm 50-100, thiab muaj ntau qib xaiv los ntawm.
Lub sijhawm tshaj tawm: Lub Rau Hli-13-2023
